What to do with a frozen windscreen



How many time have you been caught out? You’re running late for work, leave the house and you’re left staring blankly at an iced up windscreen.

Keeping the snow and ice off your windshield in the first place makes getting on the road that much easier.

Prevent & Prepare

We know not everyone has the luxury of owning their own garage, however if you do have some sort of storage space available, it will save you time and hassle in a morning. Alternatively, using a car cover will protect all of your windows, and with the law requiring you to have ‘all round’ unobstructed visibility when driving, a car cover will help you do just this.

Summer comes in handy

The shiny heat reflector you bought this Summer can still be used in Winter, but this time on the outside of your car. Slip the heat reflector underneath your wipers and just lift off when you’re ready to drive your car.

Onions & Vinegar

Rumour has it that rubbing white vinegar over your windscreen the night before driving will stop it from icing over. Alternatively running half an onion on your windows stops the ice too. However, we’ve never tried this technique, so if you have – let us know!


If you forgot to take the above actions and you’re still left staring at an icy car windscreen, you may want to invest in a can of de-icer. Whilst you may still have to use a car scraper, this should make the process a little quicker.

If you can find some the ‘preventing’ de-icer you can spray on the night before, even better.


Let your car do the work

If you’ve got the extra time to let your car do the work, here’s the steps you need to take.

  • Treat the frozen areas with a de-icer liquid
  • Start your car and make sure the heaters are all pointing to the windscreen
  • Turn on the heated rear window
  • Turn the heater to its highest setting. Be careful though, if you use power on the air will be cooling down as it reaches your windscreen
  • Set the heater to ‘recirculate’ – this will recirculate the interior air instead of bringing in fresh cold air from outside
  • If you have air-conditioning, make sure you switch this on. The air you circulate will have less condensation in it
  • Vary the engine revs every 30 seconds, this is better than leaving your vehicle on tick over
  • As the screen starts to clear, use a proper plastic scraper to remove the ice, flip it and use the rubber blade for a clean finish. Avoid improvising with coins, credit cards or kitchen utensils
  • Ensure all windows are clear and don’t forget the wing mirror!
  • Reset your heating controls to your liking before you drive off


What not to do

 Don’t leave your car running whilst unattended – unless you want to be getting the bus to work instead

  • Don’t defrost a frozen windscreen with a boiling kettle – the rapid change in temperature can turn any chip or imperfection into a large crack
  • Don’t use newspaper to protect a windscreen – newspaper will stick and be more difficult to remove than ice itself
  • Don’t run wipers on a frozen windscreen. This will damage the edge of the rubber and may cause your windscreen to streak when you use them in the rain
  • Don’t begin your journey with a partly defrosted vehicle